Projoint NIN is a stainless steel floor expansion joint with an interchangeable insert in elastic vinyl resin. The special structure of the joint means it protects the corner of the tile well and also withstands any type of traffic, both pedestrian and vehicle (fork-lift trucks, pallet trucks, motor vehicles), making it ideal for industrial and commercial settings. perforated flanges ensure perfect grip between the concrete substrate (previously laid in sections), the profile, and the tiles.